How Does the Electronic Ignition System Work on Cars and Trucks
The electronic ignition (EI) system produces a high energy secondary
spark. This spark is used to ignite the compressed air/fuel mixture at
precisely the correct time. This provides optimal performance, fuel
economy, and control of exhaust emissions. This ignition system uses
one coil for each pair of cylinders. Companion cylinders are a pair of
cylinders that are at top dead center (TDC) at the same time.
spark. This spark is used to ignite the compressed air/fuel mixture at
precisely the correct time. This provides optimal performance, fuel
economy, and control of exhaust emissions. This ignition system uses
one coil for each pair of cylinders. Companion cylinders are a pair of
cylinders that are at top dead center (TDC) at the same time.
The GM 3.4L V6 electronic ignition system is responsible for producing and
controlling a high energy secondary spark. This spark is used to ignite the
compressed air/fuel mixture at precisely the correct time. This provides
optimal performance, fuel economy, and control of exhaust emissions. This
ignition system uses one coil for each pair of cylinders.
controlling a high energy secondary spark. This spark is used to ignite the
compressed air/fuel mixture at precisely the correct time. This provides
optimal performance, fuel economy, and control of exhaust emissions. This
ignition system uses one coil for each pair of cylinders.
Each pair of cylinders that are at top dead center (TDC) at the same time
are known as companion cylinders. The cylinder that is at TDC of its
compression stroke is called the event cylinder. The cylinder that is at TDC
of its exhaust stroke is called the waste cylinder. When the ignition coil is
triggered, both companion cylinder spark plugs fire at the same time,
completing a series circuit
are known as companion cylinders. The cylinder that is at TDC of its
compression stroke is called the event cylinder. The cylinder that is at TDC
of its exhaust stroke is called the waste cylinder. When the ignition coil is
triggered, both companion cylinder spark plugs fire at the same time,
completing a series circuit
This ignition system consists of a separate ignition coil connected to each
spark plug by a short secondary wire. The driver modules within each coil
assembly are commanded ON/OFF by the powertrain control module (PCM).
The PCM primarily uses engine speed and position information from the
crankshaft and camshaft position (CMP) sensors to control the sequence,
dwell, and timing of the spark
spark plug by a short secondary wire. The driver modules within each coil
assembly are commanded ON/OFF by the powertrain control module (PCM).
The PCM primarily uses engine speed and position information from the
crankshaft and camshaft position (CMP) sensors to control the sequence,
dwell, and timing of the spark
